Re: Why I leave Lua (Was: Re: [ANN] Lua 5.3.0 (work3) now available)

[Coroutines <coroutines@...>]

On Wed, Jul 9, 2014 at 5:20 PM, Rena <hyperhacker@gmail.com> wrote:

> I forgot to mention, my personal biggest pet peeve of Lua is none of what OP
> mentioned: it's inconsistent metatable honouring in the C API. I understand
> 5.2 and 5.3 have improved some of this but it's still an issue sometimes.
> E.g. lua_isstring/lua_tostring/table.concat not honouring __tostring,
> lua_rawseti but no lua_seti. I've been bit by these a few times before.

You have all my agrees.

Another thing that seemed pretty arbitrary is that __index can be a
table.  That table can have a metatable.  But the __index of that
table that is the first __index cannot have a metatable.  I just
expect things like that to recurse, instead of being a
first-level-only trigger.  The same for __newindex.

I also wish __length could be a number for the odd case, requiring it
being a function can be wasteful.

I also wish you could point __ipairs/__pairs at a sequence to use for
keys on the `self'.  It would be easy as hell to push some object from
C as userdata, then pair a Lua sequence with it to use as the keys for
ipairs or pairs.  I have to make my own generator for that... c'est la
vie